1Includes District of Columbia.2Same-sex marriage was legal in California from June 16 to November 4, 2008, and again from June 28, 2013. 3The law that legalizes same-sex marriage in Hawaii takes effect on December 2, 2013. The state already allows for civil unions.4The law that legalizes same-sex marriage in Illinois takes effect on June 1, 2014. The state already allows for civil unions.